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Question 1

4 functions of fatty acids

Answer 1

Fatyy acids are building blocks of phospholipids and glycolipids

Many proteins are modified by the covalent attachment of fatty acids

Fatty acids are fuel molecules.

Fatty acid derivatives serve as hormones and intracellular messengers

Question 2

fatty acid stereochem

Answer 2

usually cis conformation

Question 3

fatty acids we need to know

Answer 3

Palmitate - 16 carbons

Stearate - 18 carbons

Question 4

Plant oil

Answer 4

55-83% oliec acid

liquid at room temp

Question 5

Animal fats

Answer 5

Saturated fatty acids

solid at room temp

Question 6

What does hydrogenation do to fats

Answer 6

adds H over the double bond i.e unsaturated to saturated

increases melting point

make spreads and shit

Level of hydrogenation controlled by H2, temp and time

Question 7

What does hydrogenation do to fat stereochemistry

Answer 7

converts cis to trans which is more stable

Trans isomers are implicated in disease. bad cholesterol

Question 8

Types of membrane lipids

Answer 8

Phospholipids
Glycolipids
Cholesterol

Question 9

Phospholipid structure

Answer 9

Fatty acid + glycerol(3C) + phosphate + alcohol

Question 10

Phospholipids derived from glycerol

Answer 10

Phosphoglycerides

Question 11

Phospholipid without alcohol

Answer 11

Phosphatidate

Question 12

How are glycolipids arranged in membrane

Answer 12

asymmetric

sugar side always extracellular

Question 13

Phospholipids not derived from glycerol

Answer 13

sphingosine

found in animals